import {getInfo, login, logout} from '@/api/modules/system/user'
import {getToken, removeToken, setToken} from '@/utils/auth'
import router, {resetRouter} from '@/router'
//
const state = {
  token: getToken(),
  name: '',
  avatar: '',
  introduction: '', //用户信息介绍
  roles: []
}

const mutations = {
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_INTRODUCTION: (state, introduction) => {
    state.introduction = introduction
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  },
  SET_ROLES: (state, roles) => {
    state.roles = roles
  }
}

const actions = {
  // 登录
  login({commit}, userInfo) {
    return new Promise((resolve, reject) => {
      login(userInfo).then(res => {
        if (res.code === 200) {
          commit('SET_TOKEN', res.data.token)
          setToken(res.data.token)
        } else {
          this.$message.error(res.message)
        }
        resolve(res)
      }).catch(err => reject(err))
    })
  },

  // get user info //登录后执行
  getInfo({commit,state}) {
    return new Promise((resolve, reject) => {
      getInfo(state.token).then(response => {
        const {data} = response
        if (!data) {
          reject('获取信息失败，请重新登录')
        }
        const {
          roles,
          name,
          avatar,
          introduction
        } = data
        // roles must be a non-empty array
        if (!roles || roles.length <= 0) {
          reject('获取角色失败!')
        }
        commit('SET_ROLES', roles)
        commit('SET_NAME', name)
        commit('SET_AVATAR', avatar)
        commit('SET_INTRODUCTION', introduction)
        resolve(data)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // 用户注销
  logout({commit,state,dispatch}) {
    return new Promise((resolve, reject) => {
      logout(state.token).then(() => {
        commit('SET_TOKEN', '')
        commit('SET_ROLES', [])
        removeToken()
        resetRouter()

        // reset visited views and cached views
        // to fixed https://github.com/PanJiaChen/vue-element-admin/issues/2485
        dispatch('tagsView/delAllViews', null, {
          root: true
        })

        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // 删除token
  resetToken({commit}) {
    return new Promise(resolve => {
      commit('SET_TOKEN', '')
      commit('SET_ROLES', [])
      removeToken()
      resolve()
    })
  },

  // 动态加载路由
  async changeRoles({commit,dispatch}, role) {
    const token = role + '-token'

    commit('SET_TOKEN', token)
    setToken(token)

    const {
      roles
    } = await dispatch('getInfo')

    resetRouter()

    // generate accessible routes map based on roles
    const accessRoutes = await dispatch('permission/generateRoutes', roles, {
      root: true
    })
    // dynamically add accessible routes
    router.addRoutes(accessRoutes)

    // reset visited views and cached views
    dispatch('tagsView/delAllViews', null, {
      root: true
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}
